Mallory Cave is an awesome Colorado hike, that winds through the famous Flatirons! The trail is around 3 miles round trip, with 1000 feet of elevation gain. Please note that the scramble to the cave entrance is closed April/1-October/1, to protect the bat population. The cave itself, is completely closed to the public. #coloradohikes #coloradohiking #coloradooutdoors #coloradomountains #coloradotrails